/*
 * Copyright 2009 XueSong Guo.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cn.webwheel.utils;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * 标记web参数注入的注释接口。<br>
 * 类型支持Map&lt;String, String[]&gt;、String、String[]、boolean、byte、byte[]、short、short[]、int、int[]、long、long[]、float、float[]、double、double[]
 * 在{@link cn.webwheel.utils.DIFilter}和{@link cn.webwheel.utils.fileupload.FileUploadFilter}中被使用。
 */
@Target({ElementType.CONSTRUCTOR, ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
public @interface WebParam {
    /**
     * 动态注入参数，在此为http请求中的参数名称
     * @return web参数名称
     */
    String value() default "";
}
